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Head of Architecture @ Optimal IT Recruitment Ltd

Terminal Road North, LondonOnsiteFull-time
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About this role

Salary: £100,000 - 100,000 per year

Requirements: We are seeking a senior architect or principal-level professional with a proven track record of breaking down complex legacy platforms.We require strong experience with C# and .NET, including both Framework and modern .NET.We require solid Azure cloud experience.We require experience with SQL Server at scale.We require experience with RabbitMQ, Redis, and CI/CD.We need someone who can read any part of a large codebase and quickly understand what it does.We are looking for significant experience as a senior architect or principal engineer on a complex, multi-year platform.We need proven experience evolving a live system under delivery pressure.We require hands-on experience with gradual decomposition of legacy systems, including strangler patterns, service boundary definition, and data migration sequencing.We require experience operating in a regulated environment such as PCI DSS, ISO 27001, Cyber Essentials, or equivalent.We need a proven ability to influence without authority and drive standards adoption across teams that do not report to us.We are looking for evidence of running a forum, guild, or chapter model and the outcomes it produced.We require strong written and verbal communication skills across technical and commercial audiences.We are looking for experience mentoring and growing senior engineers.We need someone comfortable defining engineering standards, integration patterns, and cross-service contracts.We require eligibility to work in the UK without sponsorship, with British citizenship or Indefinite Leave to Remain. Responsibilities: We will rely on you to stand up the architecture function from scratch, including the target architecture, ARB process, Architecture Guild, and engineering standards.We expect you to define and maintain a living 12-24 month target architecture covering what stays, what moves, when, and the service boundaries.We need you to build the ARB process, including templates, cadence, and traceable decision-making.We want you to run the Architecture Guild as the channel for driving standards into teams that do not report to us.We will ask you to sequence decomposition by building a principled backlog for which parts of the monolith to tackle first and why.We need you to drive the move from infrastructure-level monitoring to outcome-based SLOs such as latency, error rate, and user impact.We want you to partner with our Principal Security Engineer on technical security posture.We expect you to publish engineering standards covering coding conventions, integration patterns, observability, and cross-service contracts.We will rely on you to support technical hiring through calibration, interview panels, and shaping the technical bar.You will be the senior-most individual contributor in engineering and the technical authority the teams unify behind.You will join design sessions, read code, and drive coherence across the platform through influence rather than command. Technologies: ArchitectAzureC#CI/CDCloudSupportRabbitMQRedisSQLSecurityASP.NETKubernetesTOGAFmicroservices More:

We are an established, profitable UK software business operating a mission-critical, high-volume transactional platform that processes billions of transactions in a regulated environment. This is an exclusive, brand-new hire through Optimal for a fully remote UK permanent role with a salary of up to £100,000 plus excellent benefits. We are looking for a high-impact architecture leader who will shape the technical direction of the platform and bring strong Principal Engineers, Tech Leads, and a Principal Security Engineer together behind one coherent approach. This is not a line-management role and not a hands-on feature-development role; it is a senior technical leadership position focused on architecture, standards, and influence.

last updated 30 week of 2026

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